Can be used in combination with other equipment present invention relates colonoscopy, more generally, to provide an alternative propulsion system existing systems to be used for inspection purposes and the like. A propulsion unit 1 including at least one element with the [MEANS FOR SOLVING PROBLEMS] body 2, in use, with the adhesion layer outside that gives friction contact with the target surface, support for supporting the adhesion layer, the element is constituted by the layer, and a driving means for relatively moving the main body 2 and the support layer. [Selection Figure Figure 4【課題】大腸内視鏡やその他の機器と組み合わせて利用でき、さらに、一般に、検査目的等に供される既存のシステムを代替可能な推進装置を提供する。【解決手段】本体2を備え、使用時に、対象表面に摩擦接触を与える外側の付着層を有する少なくとも1つの要素を備えた推進装置1であって、当該要素を、前記付着層を支持する支持層により構成し、支持層と本体2とを相対的に移動させる駆動手段を備える。【選択図】図4
